Machine for crushing and refining paper-pulp.



M. SECOND. MACHINE FOR CRUSHING AND REFINING APPLICATION FILED IAN.24,1912- RENEWED PAPER PULP.

MAR. 2,1916.

6 1 9 1 L 1 1 p3 AH M m u t2 m b a D1 m H Y W I MAURICE SECOND M. SECOND.

MACHINE FOR CRUSHING AND REFINING PAPER PULP. APPLICATION FILED JAN. 24, 1912. RENEWED MAR. 2. 1916.

1,178,955. Patented Apr. 11,1916.

7 2 SHEETS$HEET 2- Xau .21 \W mvuvm/ URICE Szcozvo MAURICE SECOND, OF PARIS, FRANCE.

MACHINE FOR CRUSHING AND REFINING PAPER-PULP.

Application filed January 24, 1912,

To all whom it may concern:

Be it known that I, MAURICE SECOND, a citizen of the Republic of France, and resident of Paris, France, have invented new and useful Improvements in Machines for Crushing and Refining Paper-Pulp, which improvements are fully set forth in the following specification.

This invention relates to a machine intended for crushing and refining paper pulp. This machine, the characteristic features of which will be given in the following description, is diagrammatically illustrated by Way of example in the accompanying drawings, in which- Figure 1 is a vertical longitudinal section of the machine, Fig. 2 a plan, Fig. 2 shows a modified construction, and Fig. 3 is a vertical section on line A-A of Fig. 1.

The machine chiefly comprises a roller or grindstone I mounted on a spindle 2. This roller made of stone, metal or other suitable material, may be provided if desired at its circumference with blades 3 disposed in the direction of the generatrices of the cylinder.

The blades are mortised in the roller if the latter is of metal, and cut in the roller if it is of stone. The roller 1 is rotated by a pulley 4 connected to an engine not shown, and rotates in a semi-cylindrical casing 5 provided in its lower portion with one or more plates 7 made of stone, metal or other suitable material, and having a granular surface, or provided with blades 7 similar to those of the roller 1 and disposed in the same direction. A channel having its starting point at 8, a little below the upper portion of the drum 1, follows in a regular or irregular slope a path 9 10 11 in order to terminate at 12 in front of the roller 1. The upper portion 6 of the casing of the roller is extended a little above the channel 8 in order to direct the material.

The paper pulp to be crushed and refined, is placed at any point of the channel 9 10 11. The roller 1 having been started so as to rotate in the direction of the arrow A, the pulp is driven by the roller and passes between it and the casing 5. It is crushed and triturated against the plates 7, rises along the casing 6 and is discharged into the channel 8 in which is flows owing to the slope and is pushed by the material raised by the roller. It follows the path 9 10 11 12 in order to return back to the roller 1. The

pulp makes therefore a complete circuit, and

Specification of Letters Patent.

Patented Apr. 11, 1916.

Serial No. 673,209. Renewed March 2, 1916. Serial No. 81,765.

the arrangement of the channel in the form of an 8, results in mixing the pulp more thoroughly and preventing the same mater al from passing several times the same po nt of the crushing roller.. In order to fa.- cllitate the mixing of the pulp, the channel can be divided at the point 10 into two portions, as shown in Fig. 2: a channel 11, 12,

and a second channel 14 15 terminating, like the first, in front of the roller 1. A plug 16 enables the pulp to be discharged.

The front portion 8 of the channel can be formed, as shown in the drawing, by a movable shutter for collecting the greatest possible quantity of pulp raised by the roller 1. At 17 there is also a movable shutter for limiting the thickness of the layer of pulp passing between the roller and the plates, and proportioning the thickness of the said layer to the output of the roller which constitutes a pump, the output depending, as will be readily understood, on the extent of the projection of the blades, the number of blades and the speed of rotation of the roller.

Claims:

1. In a machine for crushing and refining paper pulp, the combination of a casing; a crushing roller therein; a uniformly sloping channel extending laterally from the roller and having its ends adjacent to the upper and lower parts of the roller respectively and an adjustable shutter at the lower end of the channel and adapted to entirely close said channel.

2. In a machine for crushing and refining paper pulp, the combination of a substantially semi-cylindrical casing; a crushing roller rotatably mounted therein; a sloping channel extending laterally from the roller and having its ends adjacent to the upper and lower parts of the roller respectively; and a shutter hinged above the lower part of the channel and having its free edge near the lower end of the channel.

3. In a machine for crushing and refining paper pulp, the combination of a casing; a crushing roller therein; a uniformly sloping channel of greater length than width and greater width than depth extending laterally from the ca sing, the upper end of the channel being substantially tangential to the upper part of the roller, the lower end of the channel being under the upper part thereof, and substantially tangential to the lower part of the roller, the intermediate part of the channel most remote from the roller curving in a substantially horizontal curve, the cross section of the channel being substantially horizontally disposed throughout; a movable shutter hinged to and forming a continuation of the bottom of the upper part of the channel and having its free edge near the roller; and another movable shutter hinged above the lowerpart of the channel and having its free end near the lower end of the channel.

4. In a machine for crushing and refining paper pulp, the combination of a substan tially semi-cylindrical casing; a crushing roller rotatably mounted thereon; a crushing means at the lower part of the casing and cooperating with the roller; a sloping channel, of greater width than depth, extending laterally substantially tangentially to the.

upper part of the roller, curving in an approximately horizontal curve at its part most forming a continuation of the bottom of the upper part of said channel and having its free end near and movable relative to the periphery of the rollers; and another movable shutter hinged above the lower part of the channel and having its free end movable adjacent to and. relative to the lower end of the channel.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

MAURICE SEOON D. Witnesses:

EMILE Lnnnn'r,

H. C. Coxn. 

